Coffee-mill.



A-l. GONSALVES. corms mm. APPLICATION FILED JULY 18. 191(- mmm BMW, 191?.

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lA/I/E/VTOR A. LGonsalves Arm/m WITNESSES g 64W ANTONIO IZIDBO GONSALVES, F FUIICHAL, MADEIRA.

COFFEE-MILL.

To all whom it may concern:

Be it known that I, ANTONIO Iznmo Gon- SALVES, a citizen of the Republic of Brazil, and a resident of Funchal, Madeira Islands,

have invented a new and Improved Coffee- Mill, of which the following is a full, clear, and exact description.

My invention relates to mills for grinding coffee and has reference more particularly to to a manual device which is simple, compact, and by means of which a small amount of cofl'ee may be ground quickly.

Another object of the invention is to provide a mill for coifee which is closed entirely during the grinding so that the aroma is prevented from escaping as the coffee is ground. a

With these and other objects in view the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of the parts as herein fully described, illustrated and claimed.

In the accompanying drawings, forming at part of the application, similar characters of reference indicate corresponding parts in all the views, and

Figure 1 is a longitudinal section through a mill embodying my invention; and

and Fig. 2 is a horizontal section on line 2 42,

Fig. 1.

Referring to the drawings 3 is a tubular shell or housing of any suitable material. The shell is interiorly threaded from one ltd end substantially to the middle so that the flange 4 of a frusto cone shaped sleeve 5 may be engaged with the housing, the narrow end of the sleeve when threaded into the housing pointing toward the end where I an the thread begins. This sleeve is indented interiorly by spiral teeth 6. The threads in the housing accommodate a ring 7 in proximity of the narrow end of the sleeve. The ring 7 has a bridge 8 which has a centrally enlarged portion 9 serving as a bearing for the lower end of a spindle 10. A toothed member 11 is constrained to revolve with the spindle 10. Said toothed member is the shape of a frusto cone the slope of which is less than that of a frusto cone shaped sleeve, so that there is a larger space be tween the sleeve and the frusto cone shaped member at the wider ends of same. The spindle also bears in a ring 12 similar ed to the ring 7, which is disposed above the wider end of the sleeve within the housing hit Specification of Letters Patent.

Patented Nov. 2d, 191%.

Application filed July 18, 19 17- 1 Serial N0.'181,299.

3 and with which it is engaged by means of threads provided on the ring and in the housing, leading from the upper end of the housing.

The upper end 01"" the housing in proximity ofthe ring 12 istapered as shown at 13 to accommodate the tapering end 141- of acover 15, to the cover 15 a handle 16 is secured to revolve therewith, the tapering surface 13 serving as a bearing for the handie and cover. The cover has an angular aperture 17 into which the angularly shaped end of spindle enters and whereby rotary motion is transmitted to the spindle 10 and the frusto cone shaped member 11.

By means of the rings 7 and 12 the coarseness of-the rinding may be controlled for the position of the toothed member 11 with in the sleeve 5 depends on the position of the rings relative to said sleeve. The rings 7 and 12 serve as hoppers to and from the grinding members respectively.

The outer end of the housing below the ring 7 is tapered to engage a cup 19 into which the ground material is discharged after it has been crushed by the members 11 and 5.

When coffee is to be ground or other material of that character the cover 15 is sim ply raised and the material introduced to the grinding members through the ring 12. After the desired amount has been introduced the cover must be replaced to bring the handle 16 in engagement with the spindle. Thus the housing is completely closed while the grinding is carried on, the ground material falling into the cup 19. After the material is ground the cup is removed and in the case of coffee the material is introduced into a cup and boiling water poured on to it and infused. In consequence the aroma of the coflee has no time to evaporate and is retained by the infusion formed.

It will also be remarked that in the construction of my mill no screws, pins or nails are used for retaining any part in position. There are few members which go into the making of the mill and although the mill. is of a small size all the parts constituting it are comparatively large in size and few.

I claim:

1. In a grinding mill a tubular housing, a frusto cone shaped sleeve threaded into the housing, rings threaded into the housing above and below the sleeve, said sleeve having an inner dented surface, a frusto .said rings preventing any longitudinaLLdis Placement 0 aid :twt 'ed msembe z nd-1 a handle engaging-the; toothed member to: imp r r ary metions e it alnaa'gri d g m l -,jaitu nl r Ql SiI g,

' ruster ene hape l e secu d r nw h assinet: illvfirsWliGMiQdnt he heusine: above: and below; said frusto cone shaped} sleeve ha he. .pes tio c sa d r ngs y, be; adjusted relative .towsai-d; sleeve,-. a frusto; cone shapedztoothedamemberfin said sleeve, a spindle constrained, i105; move; with; the; oth member; Y n b ring a d i g a d spindl e av g shoulder fo ngaging! id ingis -i he bi" gitu nahdisp ment of the spindle Within the housing is prevented, and a handle for the spindle to impart rotary .lniovement" to same.

4. In a grinding mill, a housing, a stationary grinding member in the housing, a revoluble grinding member, and bearings above and-below the stationary grinding memben for, saidrevoluble grinding memher, said bearings forming hoppers to and from the grinding. members irespectively, said stationary revoluble member and; bearings being adjustable within the housing;

relative to one another-whereby,the clearanoe between the revolubles and the, station ary, grind ng members; may be varied.

5. tionary grinding memben ithin the housing, a ring Within a the housing; above the; grinding member mounted to beadjpsted; j

to v and from said; fixed grinding and a revoluble grinding member 7 in said ring andhaving meanswhieh limit the: axial 'morementof said revoluble grind to said grinding members.

- v NT N Q' I' RQ GQNSM YE 00D! nfvthh patent ambo,obtained toreflge; cent: each by addressingithe. Commissioner- 10f, ret eats, washjngton,.D.-V0.v" V

In a grinding mill,awhousing a stasbear ng;

5O ing member, said'rin'g iserving as ia hopperg; for fillOWlIlg: the matter to be gronnd-to; pass;- 

